invoke-ai/InvokeAI · error · HTTPException

Only admins can create default presets

Error message

Only admins can create default presets

What it means

After validating the form data, create_style_preset rejects non-admin users who attempt to create a preset with type PresetType.Default, returning HTTP 403 'Only admins can create default presets'. Default presets are the shipped catalog and are admin-managed by design.

Source

Thrown at invokeai/app/api/routers/style_presets.py:212

) -> StylePresetRecordWithImage:
    """Creates a style preset"""

    try:
        parsed_data = json.loads(data)
        validated_data = StylePresetFormData(**parsed_data)

        name = validated_data.name
        type = validated_data.type
        positive_prompt = validated_data.positive_prompt
        negative_prompt = validated_data.negative_prompt
        is_public = validated_data.is_public

    except (json.JSONDecodeError, pydantic.ValidationError):
        raise HTTPException(status_code=400, detail="Invalid preset data")

    # Only admins may create default-typed presets — they're the shipped catalog.
    if type == PresetType.Default and not current_user.is_admin:
        raise HTTPException(status_code=403, detail="Only admins can create default presets")

    pil_image = None
    if image is not None:
        if not image.content_type or not image.content_type.startswith("image"):
            raise HTTPException(status_code=415, detail="Not an image")

        contents = await image.read()
        try:
            pil_image = await asyncio.to_thread(Image.open, io.BytesIO(contents))

        except Exception:
            ApiDependencies.invoker.services.logger.error(traceback.format_exc())
            raise HTTPException(status_code=415, detail="Failed to read image")

    preset_data = PresetData(positive_prompt=positive_prompt, negative_prompt=negative_prompt)
    style_preset = StylePresetWithoutId(name=name, preset_data=preset_data, type=type, is_public=is_public)
    new_style_preset = await asyncio.to_thread(
        ApiDependencies.invoker.services.style_preset_records.create,

View on GitHub (pinned to 0b6a024f2f)

Solutions

1. Change the preset type in the data payload to 'user' (or another non-default PresetType).
2. If a default preset is genuinely needed, have an admin account create it, or ask an admin to grant the account admin rights.
3. Fix the client UI so new presets default to type 'user'.
4. When duplicating a default preset, strip/replace the type field before POSTing.

Example fix

// before
const preset = { ...copiedDefault, name: "Mine" }; // type: "default"

// after
const preset = { ...copiedDefault, name: "Mine", type: "user" };

function assertCanCreateType(presetType, currentUser) {
  if (presetType === "default" && !currentUser.is_admin) {
    throw new Error("Only admins can create default presets");
  }
}

assertCanCreateType(preset.type, currentUser); // before POST /style_presets/

function isAdminUser(u: { is_admin?: boolean }): u is { is_admin: true } {
  return u.is_admin === true;
}

try {
  return await api.createStylePreset({ data: JSON.stringify(preset), image });
} catch (e) {
  if (e.status === 403 && e.detail === "Only admins can create default presets") {
    // non-admin: coerce to 'user' type or prompt for admin elevation
    return api.createStylePreset({ data: JSON.stringify({ ...preset, type: "user" }), image });
  } else throw e;
}

When it happens

Trigger: POST /style_presets/ with data JSON containing "type": "default" (PresetType.Default) while the authenticated user's is_admin is false.

Common situations: Client UI defaulting the type dropdown to 'default'; copying a shipped default preset's JSON as a template and forgetting to change its type; non-admin service accounts automating imports; user account lacking admin role after an instance migration.

Related errors

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AI-assisted analysis of invoke-ai/InvokeAI@0b6a024f2f (2026-08-29). Data as JSON: /api/errors/ec4d605b42be4329. Report an issue: GitHub.